I also wonder if she had alcohol in her system and that contributed to the fire. Not saying she'd deserve it if it's the case, because who could foretell that? I mean, they don't tell you before surgery "By the way, don't drink any vodka for 48 hours before surgery or you might burst into flames." Although maybe they should.
I had the same thing happen with a mole on my arm and I was bone dry (of liquor). The doctor had used alcohol to deaden the place and then touched an electrocautery to it.
Rather spectacular for a few moments. But the alcohol quickly burned itself out and the doctor was apologetic. I only lost some arm hair.
Another website had people arguing about what proof of alcohol would burn. Some claimed that 40 proof would sustain a fire, while others said that their 80 proof vodka wouldn't but 100 proof would. Considering that a blood alcohol level of 0.1% is legally drunk, and that converts to 0.2 proof, I doubt she caught on fire from drinking alcohol unless she had just drowned at the local distiller.